Transfer cannula



FIG. 1 is a top perspective view of a transfer cannula showing our new design, the opposite side being identical thereto;

FIG. 2 is a bottom perspective view thereof, the opposite side being a mirror image thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image thereof; and

FIG. 4 is a front elevational view thereof, the opposite side being a mirror image thereof. 

The ornamental design for a transfer cannula, as shown and described. 